1*6a602769Sragge/* $NetBSD: romread.S,v 1.2 2017/05/22 17:00:19 ragge Exp $ */ 228b1aa2bSmatt/* 328b1aa2bSmatt * Copyright (c) 1995 Ludd, University of Lule}, Sweden. 428b1aa2bSmatt * All rights reserved. 528b1aa2bSmatt * 628b1aa2bSmatt * This code is derived from software contributed to Ludd by 728b1aa2bSmatt * Bertram Barth. 828b1aa2bSmatt * 928b1aa2bSmatt * Redistribution and use in source and binary forms, with or without 1028b1aa2bSmatt * modification, are permitted provided that the following conditions 1128b1aa2bSmatt * are met: 1228b1aa2bSmatt * 1. Redistributions of source code must retain the above copyright 1328b1aa2bSmatt * notice, this list of conditions and the following disclaimer. 1428b1aa2bSmatt * 2. Redistributions in binary form must reproduce the above copyright 1528b1aa2bSmatt * notice, this list of conditions and the following disclaimer in the 1628b1aa2bSmatt * documentation and/or other materials provided with the distribution. 1728b1aa2bSmatt * 1828b1aa2bSmatt * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 1928b1aa2bSmatt * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 2028b1aa2bSmatt * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 2128b1aa2bSmatt * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 2228b1aa2bSmatt * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 2328b1aa2bSmatt * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2428b1aa2bSmatt * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2528b1aa2bSmatt * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2628b1aa2bSmatt * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 2728b1aa2bSmatt * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2828b1aa2bSmatt */ 2928b1aa2bSmatt 3028b1aa2bSmatt /* All bugs are subject to removal without further notice */ 3128b1aa2bSmatt 3228b1aa2bSmatt 3328b1aa2bSmatt 3428b1aa2bSmatt#include "../include/asm.h" 3528b1aa2bSmatt 3628b1aa2bSmatt/* 3728b1aa2bSmatt * read750 (int block, int *regs) 3828b1aa2bSmatt */ 3928b1aa2bSmattENTRY(read750, 0xFFE) 4028b1aa2bSmatt movl 8(%ap), %r8 4128b1aa2bSmatt movl 4(%r8), %r1 4228b1aa2bSmatt movl 8(%r8), %r2 4328b1aa2bSmatt movl 12(%r8), %r3 4428b1aa2bSmatt movl 24(%r8), %r6 4528b1aa2bSmatt clrl %r5 4628b1aa2bSmatt movl 4(%ap), %r8 4728b1aa2bSmatt pushl $0 4828b1aa2bSmatt movl $0, 4(%sp) 4928b1aa2bSmatt movl %fp, 0xf0000 # ragge ??? 5028b1aa2bSmatt jsb (%r6) 5128b1aa2bSmatt movl 0xf0000, %fp 5228b1aa2bSmatt ret 5328b1aa2bSmatt 5428b1aa2bSmatt/* 5528b1aa2bSmatt * romread_uvax (int lbn, int size, void *buf, struct rpb *rpb) 5628b1aa2bSmatt */ 5728b1aa2bSmattENTRY(romread_uvax, 0xFFE) 5828b1aa2bSmatt movl 16(%ap),%r11 # restore boot-contents of %r11 (rpb) 5928b1aa2bSmatt movl 52(%r11), %r7 # load iovec/bqo into %r7 6028b1aa2bSmatt addl3 (%r7), %r7, %r6 # load qio into %r6 6128b1aa2bSmatt pushl %r11 # base of rpb 6228b1aa2bSmatt pushl $0 # virtual-flag 6328b1aa2bSmatt pushl $33 # read-logical-block 6428b1aa2bSmatt pushl 4(%ap) # lbn to start reading 6528b1aa2bSmatt pushl 8(%ap) # number of bytes to read 6628b1aa2bSmatt pushl 12(%ap) # buffer-address 6728b1aa2bSmatt calls $6, (%r6) # call the qio-routine 6828b1aa2bSmatt ret # %r0 holds the result 6928b1aa2bSmatt 7028b1aa2bSmatt/* 7128b1aa2bSmatt * romwrite_uvax (int lbn, int size, void *buf, struct rpb *rpb) 7228b1aa2bSmatt */ 7328b1aa2bSmattENTRY(romwrite_uvax, 0xFFE) 7428b1aa2bSmatt movl 16(%ap), %r11 # restore boot-contents of %r11 (rpb) 7528b1aa2bSmatt movl 52(%r11), %r7 # load iovec/bqo into %r7 7628b1aa2bSmatt addl3 (%r7), %r7, %r6 # load qio into %r6 7728b1aa2bSmatt pushl %r11 # base of rpb 7828b1aa2bSmatt pushl $0 # virtual-flag 7928b1aa2bSmatt pushl $32 # write-logical-block 8028b1aa2bSmatt pushl 4(%ap) # lbn to start reading 8128b1aa2bSmatt pushl 8(%ap) # number of bytes to read 8228b1aa2bSmatt pushl 12(%ap) # buffer-address 8328b1aa2bSmatt calls $6, (%r6) # call the qio-routine 8428b1aa2bSmatt ret # %r0 holds the result 8528b1aa2bSmatt 86